What exactly are you describing with "R439"? eg: a graphics/video card, a notebook pc, a desktop pc, other? Please be specific with your hardware description so I can be specific with an answer.

Perhaps clicking on "Support" on [url="www.samsung.com/levant/consumer/computers-peripherals/laptops/essential/NP-R439-DA02JO-spec"]this Samsung notebook page[/url] will provide you with what you need.

It appears that "439"is not a graphics/video adapter after all but a "Notebook PC".